Tubing coupler for respiratory systems



FIG. 1 is an isometric view of a tubing coupler for respiratory systems showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an elevational view of one end thereof; and

FIG. 6 is a cross-sectional view taken on line 6--6 of FIG. 3. 

The ornamental design for a tubing coupler for respiratory systems, as shown. 